Prepares release 3.2.1 (#216)

* Prepares release 3.2.1

Author: brandonvfx

HISTORY.rst

@@ -4,9 +4,9 @@ Shotgun Python API Changelog
 
 Here you can see the full list of changes between each Python API release.
 
-v3.2.1 (TBD)
+v3.2.1 (2019 Oct 29)
 =====================
-- Returns a specific error from 'share_thumbnail' when the source thumbnail is a 'transient' thumbnail.
+- Returns a specific error from ``share_thumbnail`` when the source thumbnail is a 'transient' thumbnail.
 
 v3.2.0 (2019 Sept 23)
 =====================

setup.py

@@ -27,7 +27,7 @@
 
 setup(
     name='shotgun_api3',
-    version='3.2.0',
+    version='3.2.1',
     description='Shotgun Python API ',
     long_description=readme,
     author='Shotgun Software',

shotgun_api3/shotgun.py

@@ -117,7 +117,7 @@ def _is_mimetypes_broken():
 
 # ----------------------------------------------------------------------------
 # Version
-__version__ = "3.2.1.dev"
+__version__ = "3.2.1"
 
 # ----------------------------------------------------------------------------
 # Errors